package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.WebSocket.WebSocketServer;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl implements OrderService {
    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;



    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private WebSocketServer webSocketServer;

    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种业务异常（地址为空，购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook==null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查收获地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list==null || list.size()==0){
            throw  new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入一条订单数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);

        //记得返回订单id
        orderMapper.insert(orders);

        List<OrderDetail> orderDetails = new ArrayList<>();
        //向订单明细表插入多条订单明细数据
        for(ShoppingCart cart:list){
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);

        //清空当前用户购物车
        shoppingCartMapper.clearByUserId(userId);

        //封装VO对象并返回
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        //微信支付暂时实现不用了，默认会支付，来单提示
        Map map=new HashMap();
        map.put("type",1);
        map.put("order_id",orders.getId());
        map.put("content","订单号："+orders.getNumber());

        String json=JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        return orderSubmitVO;
    }

    @Override
    public PageResult getHistoryOrders(int pageNum, int pageSize, Integer status) {
        // 设置分页
        PageHelper.startPage(pageNum, pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        // 分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    @Override
    public OrderVO getOrderDetail(Long id) {
        // 查询订单
        Orders orders =orderMapper.getById(id);

        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public void cancelOrder(Long id) {
        // 根据id查询订单
        Orders orders = orderMapper.getById(id);
        // 校验订单是否存在
        if (orders == null){
            throw  new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orders.getStatus() >2){
            throw  new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        // 订单处于待接单状态下取消，需要进行退款
        if (orders.getStatus() == Orders.TO_BE_CONFIRMED){
            // 退款
            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消订单");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void repetition(Long id) {
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();

        //获取订单详细信息
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        //将订单明细信息转化为购物车信息
        List<ShoppingCart> shoppingCarts = new ArrayList<>();
        for (OrderDetail orderDetail : orderDetails){
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail,shoppingCart,"id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCarts.add(shoppingCart);
        }
        //将购物车信息插入到购物车表中
        shoppingCartMapper.insertBatch(shoppingCarts);
    }

    @Override
    public PageResult pageByCondition(OrdersPageQueryDTO queryDTO) {
        PageHelper.startPage(queryDTO.getPage(), queryDTO.getPageSize());
        Page<Orders> page =orderMapper.pageQuery(queryDTO);
        List<OrderVO> list = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (ordersList != null && ordersList.size() > 0){
            for (Orders orders : ordersList){
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                // 查询订单菜品详情信息（订单中的菜品和数量）
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
                orderVO.setOrderDetailList(orderDetailList);

                // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
                List<String> orderDishList = orderDetailList.stream().map(x -> {
                    String orderDish = x.getName() + "*" + x.getNumber() + ";";
                    return orderDish;
                }).collect(Collectors.toList());

                // 将该订单对应的所有菜品信息拼接在一起
                orderVO.setOrderDishes(String.join("", orderDishList));
                list.add(orderVO);
            }
        }

        return new PageResult(page.getTotal(),list);
    }

    @Override
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        orderStatisticsVO.setToBeConfirmed(orderMapper.countByStatus(Orders.TO_BE_CONFIRMED));
        orderStatisticsVO.setConfirmed(orderMapper.countByStatus(Orders.CONFIRMED));
        orderStatisticsVO.setDeliveryInProgress(orderMapper.countByStatus(Orders.DELIVERY_IN_PROGRESS));
        return orderStatisticsVO;
    }

    @Override
    public void confirm(OrdersConfirmDTO confirmDTO) {
        Orders orders = Orders.builder()
                .id(confirmDTO.getId())
               .status(Orders.CONFIRMED)
               .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        if (orders==null||orders.getStatus() != Orders.TO_BE_CONFIRMED){
            // 订单不处于待接单状态
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        // 订单处于待接单状态下拒单，需要进行退款
        //支付状态
//        Integer payStatus = ordersDB.getPayStatus();
//        if (payStatus == Orders.PAID) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }
        orders = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        Orders orders = orderMapper.getById(ordersCancelDTO.getId());
        if(orders.getPayStatus()==Orders.PAID){
            // 订单已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
        }
        orders = Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)
                .cancelReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders.getStatus() == null||orders.getStatus() != Orders.CONFIRMED){
            // 订单不处于待派送状态
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void complete(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders.getStatus() == null||orders.getStatus() != Orders.DELIVERY_IN_PROGRESS){
            // 订单不处于派送中状态
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders.getStatus() == null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //发送微信消息提醒用户
        Map map=new HashMap();
        map.put("type",2);
        map.put("order_id",id);
        map.put("content","订单号："+orders.getNumber());

        String json=JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
